Abdullah Bayraktar · BerlinStaff iOS Engineer
I’ve spent 13+ years building iOS apps used by millions, and helping teams ship them with confidence.
About
Architecture that still holds up two years later.
I’m a Staff iOS Engineer at Just Eat Takeaway.com, where I lead iOS development of the Scoober courier app, used by the couriers in JET’s own delivery fleet. I set the iOS platform’s technical roadmap, guide initiatives from discovery to release through RFCs and ADRs, and hire and mentor iOS engineers.
Before that, I built apps across banking, fitness, health and social in Istanbul and Berlin. I studied Computer Engineering at Middle East Technical University.
What I care about: codebases teams enjoy working in, and apps that feel effortless to use.
What I do
From first commit to App Store, at scale.
iOS Architecture
Modular codebases built with MVVM, Coordinators and Clean Architecture that scale with the product and the team.
Technical Leadership
Roadmaps and OKRs, RFCs and ADRs, code review, hiring and mentoring.
Quality & Delivery
Unit and UI testing, CI/CD with Fastlane, GitHub Actions and Bitrise, and monitoring with Crashlytics and DataDog.
Selected work
Apps in millions of pockets.
Delivery, health, fitness, banking and social, across Berlin and Istanbul.
Scoober Courier · Just Eat Takeaway.com
The courier app behind JET’s own delivery fleet. As Staff Engineer I lead its iOS development, technical roadmap and mentoring; as Senior Engineer I contributed to its modularization and automated Fastlane/GitLab delivery pipelines. Built with Swift, UIKit, SwiftUI, Combine and Swift Concurrency.
CASPAR Health
Digital rehabilitation used by 250+ partner clinics in Germany. Built engagement features and helped expand to more clinics, GDPR-compliant.
eGYM Trainer for iPad
Used by trainers in more than 2,000 gyms worldwide.
İşCep · İşbank
The iPhone app of Turkey’s leading private bank. Also worked on Dataroid, an analytics SDK used by international companies.
Scorp
Video blogging app with 13M+ users. Developed and refactored the iPhone app.
Visa Europe · Monitise
Started and led the Visa Offers iOS project, plus two proof-of-concept projects for Visa Europe.
Speaking & Writing
Sharing hard-won lessons.
The iOS Decisions You Can’t Take Back
The one-way doors of iOS development: architecture, data persistence, API contracts, platform decisions and app state. Choices that are easy to make early, hard to undo later, and shape how an app evolves as its codebase, team and user base grow.
View session →What an iOS Dev Needs to Know About Swift Concurrency
A series on Substack breaking down Swift Concurrency for working iOS developers.
Read the series →Toolbox